// Copyright 2015 The LUCI Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package common

import (
	"fmt"
)

// Strings accumulates string values from repeated flags.
//
// Use with flag.Var to accumulate values from "-flag s1 -flag s2".
type Strings []string

func (c *Strings) String() string {
	return fmt.Sprintf("%v", []string(*c))
}

// Set is needed to implements flag.Var interface.
func (c *Strings) Set(value string) error {
	*c = append(*c, value)
	return nil
}
